图案循环如何影响用量？

每一幅都必须从图案的同一位置开始，因此要裁到循环的整数倍。墙高 2.4 米、循环 53 厘米时，每幅要浪费约 22 厘米。

单卷和双卷有什么区别？

几乎所有墙纸都按双卷生产和销售，尽管报价按单卷计。双卷约 10 米长，可裁四幅 2.4 米；单卷只能裁两幅。

要扣除门窗吗？

只扣除大面积的。普通窗户并不能省下一整幅，因为窗上窗下的部分仍要从整卷上裁出。只扣除约 2 平方米以上的洞口。

应该多买多少墙纸？

比计算值多买一卷并保存好。不同批次染色存在差异，一年后再买同款也无法与原墙面完全一致。

可以直接贴在旧墙纸上吗？

可以但不建议。新胶的水分会让旧纸松脱，任何接缝和纹理都会透出来。撕掉旧纸、洗净残胶再刷基膜，效果好得多。

墙纸计算器

计算一个房间需要多少卷墙纸，并计入图案循环给每一幅带来的额外长度。

公式与数据最后核对于 2026年8月6日 — Cosyslabs

输入

房间周长(ft)

墙面高度(ft)

每卷长度(ft)

卷材宽度(in)

图案循环长度(in)

门窗面积(ft²)

每卷单价（选填）($)

Result

Rolls needed

Strips

Strip length (cut): 8.00 ft
Strips per roll: 4
Wall area (net): 384 ft²
Waste from pattern: None (random match)

Waste default: 0% — 这里的损耗来自图案循环而不是固定百分比，计算器会根据你填写的循环长度推算。

Diagram

Estimates only. Verify with a licensed contractor or supplier before purchasing. Rough Estimator! is not responsible for shortages, overages, or material variances. See our methodology for formulas and sources.

公式

每幅长度 = 向上取整(墙高 ÷ 循环) × 循环   ·   卷数 = 总幅数 ÷ 每卷幅数

参考资料

Measure what the tool asks for
This calculator works from 房间周长 in ft, 墙面高度 in ft and 每卷长度 in ft. Measure the finished area you are covering, not the material — an estimate is only as good as the dimensions you feed it.
What it does with those numbers
每幅长度 = 向上取整(墙高 ÷ 循环) × 循环 · 卷数 = 总幅数 ÷ 每卷幅数 Every figure on the page comes out of that one expression, so you can check it by hand.
Why it adds 0% waste
这里的损耗来自图案循环而不是固定百分比，计算器会根据你填写的循环长度推算。
Where the numbers come from
The constants are taken from Wallcoverings Association — Measuring and estimating guidance and ASTM F793 — Standard Classification of Wallcoverings, linked in full below. If a figure here disagrees with your supplier's spec sheet, use the spec sheet — it describes the product you are buying.
What this will not tell you
This is a material takeoff, not a bid. It does not price labour, permits, delivery, equipment hire or site preparation, and it assumes a straightforward layout. Complex cuts, difficult access and awkward shapes all cost more than the geometry suggests.

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基膜
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常见问题

用周长除以卷材宽度得到幅数，再算出每卷能裁几幅完整长度，然后相除。3.6 × 3.6 米、墙高 2.4 米的房间通常需要 5 个双卷。

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Cite this page

Cosyslabs. (2026). 墙纸计算器. Rough Estimator!. https://roughestimator.com/zh/wallpaper-calculator

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